123results about How to "High chemical stability" patented technology

The invention provides a method for preparing porous silicon dioxide antireflective film with controllable refractive index, which adopts the method of first base catalysis and then acid catalysis for preparing coating liquid and is suitable for dip coating or spraying process or spin-coating method. Porous silicon dioxide basement film layer is coated on a base plate; and the base plate with porous silicon dioxide basement film layer is processed under high temperature so as to obtain the silicon dioxide film layer. The film layer which is prepared by the invention has the advantages of high hardness, high chemical stability, good self-cleaning capability and broadband antireflection.

The invention discloses a manufacture method for high temperature resistance strong basicity anion exchange resin. Styrene/divinylbenzene crosslinked polymer micro-balls are used as the framework of the resin; acylation reaction is carried out between the styrene/divinylbenzene crosslinked polymer micro-balls and sulfuryl chloride (molecular formua: SO2CI2); -SO2CI function group is drawn into benzene ring of cinnamene; and then tertiary amine resin is synthesized by amination reaction between the styrene/divinylbenzene crosslinked polymer micro-balls and long carbochain diamine with N, N-dialkyl and further quaternized into Nalcite SAR. The thermal stability evaluation on quaternary ammonium resin shows that compared with the conventional Nalcite SAR, the thermal stability of the quaternary ammonium resin is obviously increased; the usage temperature can reach about 90-100 DEC C; the application field of the Nalcite SAR is expanded; thereby the high temperature resistance Nalcite SAR is obtained; the structural formula of the high temperature resistance Nalcite SAR is as follows: wherein, m equals to 1-12, n equals to 2m, P is styrene/divinylbenzene crosslinked polymer framework and R is alkyl.

The present invention discloses preparation process of nanometer ZnO line array coated with nanometer TiO2 particle. After liquid phase process of growing nanometer ZnO line array, a sol-gel process is adopted to coat the nanometer ZnO line array with one layer of nanometer TiO2 particle, so as to obtain nanometer ZnO line array with surface TiO2 modification and high chemical stability. Owing to the coupling and synergistic effects between the nanometer ZnO particle and the nanometer TiO2 particle, the nanometer ZnO line array coated with nanometer TiO2 particle has reinforced and improved gas sensitive performance, light emitting performance, photocatalytic performance, etc as well as derived new physical phenomena and available functions.

Provided is a novel crystalline solid electrolyte which can be used as a dispersion medium when slurrying polar solvents such as NMP, acetone, and DMF, and for which a decrease in conductivity when the crystalline solid electrolyte is immersed in said solvents can be suppressed. Proposed is a crystalline solid electrolyte represented by Compositional Formula: Li_xSi_yP_zS_aHa_w (here, Ha includes one or two or more of Br, Cl, I, and F, and 2.4<(x−y)/(y+z)<3.3), in which the content of S is 55 to 73% by mass, the content of Si is 2 to 11% by mass, and the content of a Ha element is 0.02% by mass or more.

The invention discloses an antibacterial-type nanofiber-based preservative film and a preparation method thereof. The novel antibacterial-type nanofiber-based preservative film which has the excellent mechanical property, can be completely degraded and completely meets the physical performance requirements of preservative films is prepared by taking micro-fibrillated nanocellulose (MFC) and chitosan as raw materials; the preservative film is prepared mainly through the step that ultrasonic blending is performed on the micro-fibrillated nanocellulose (MFC) and an aqueous acetic acid solution of chitosan under the appropriate proportion condition. Compared with a food preservation material on the market, the antibacterial-type nanofiber-based preservative film has the advantages that the production technology is simple, and the preparation cost is low; the preservative film also has the advantages of being efficient, antibacterial, high in air permeability, transparency, bonding property, skin film flexibility and wear resistance and the like, is a new-generation green and environment-friendly type preservative film for replacing an existing plastic preservative film, can serve as a material for packaging food and has the wide application prospect in the field of food packaging films.

The invention belongs to a high temperature oxidation resistant film sensor and a production method thereof. The film sensor comprises a to-be-tested alloy substrate and a NiCrAlY alloy transition layer adhered on the top surface of the substrate, an aluminum oxide/aluminum nitride transition layer, an aluminum oxide/aluminum nitride ceramic insulating layer, a sensor function layer composed of electrodes, a Si3N4 isolating layer and an aluminum oxide protective layer arranged on the insulating layer are orderly arranged above the transition layer; the production method comprises surface treatment of alloy substrate, NiCrAlY alloy transition layer settling on the alloy substrate, precipitation, oxidation or nitriding treatment of metal aluminum, setting of Al2O3/AlN ceramic insulating layer, setting of film sensor function layer and Si3N4 isolating layer thereof, and setting of Al2O3 protective layer. The Si3N4 isolating layer in the invention can be used for effectively resisting the oxygen atom dissolved from the insulating layer and aluminum oxide protective layer at high temperature environment to diffuse to the function layer, the stability and reliability of the sensor at high temperature high pressure working environment can be improved, and relative and more accurate basic data is provided for the study and design of a turbine engine.

This invention discloses a composite oxygen-permeable ceramic film, which is composed of oxygen ion-electron composite conductor and oxygen ion conductor at a wt. ratio of (1:4)-(4:1). The oxygen ion conductor is an oxide with fluorite structure, and the oxygen ion-electron composite conductor is an oxide with perovskite structure. The chemical formula is (100-x) wt.% Ce1-yLnyO2-y/(2-x) wt.% Ln1-zBzMO3, wherein, 20 less than or equal to x less than or equal to 80; 0.05 less than or equal to y less than or equal to 0.5; 0 less than or equal to z less than or equal to 1; Ln is one or more of lanthanide elements and Y; B is one or more of Ba, Sr, Ca, Mg, Pb and Bi; M is one or more of Cr, Mn, Fe, Zn, Ga, Al, Zr and Ti. The composite oxygen-permeable ceramic film is synthesized by mixing the nitrate solutions of all metal ions directly, which can endow the ceramic film with higher oxygen permeability.

The invention relates to a method used for controllable preparation of monodisperse mesoporous molybdenum disulfide nanospheres, and belongs to the technical field of molybdenum disulfide nano material synthesis. The method comprises following steps: a surfactant, an organic solvent, and a Mo salt aqueous solution are mixed so as to obtain a mixed solution; the mixed solution is delivered into a glass bottle for stirring and heating reflux, wherein temperature is controlled to be 80 to 130 DEG C; SiO2 sol is added into the mixed solution dropwise; an obtained mixture is delivered into a stainless steel reaction vessel, the stainless steel reaction vessel is delivered into a drying oven for reaction, wherein reaction temperature is controlled to be 180 to 260 DEG C; an obtained solid product is collected from the stainless steel reaction vessel, and is washed with a fluorine-containing solution for a plurality of times so as to obtain target products. According to the method, self assembling of the mesoporous MoS2 nanospheres is realized using SiO2 templating agent and water vaporization of liquid microemulsion; microemulsion method is adopted, so that a problem that the size of nanospheres is uncontrollable is solved. The particle size distribution of the MoS2 nanospheres can be controlled effectively via controlling the amounts of the surfactant, water, the oil solvent, and the Mo salt.

The invention discloses a water-based nano thin-coating heat preservation paint and a preparation method thereof. The paint comprises the following raw materials by weight: 30-40 parts of an acrylic emulsion, 5-10 parts of titanium dioxide, 20-40 parts of hollow glass beads, 5-20 parts of aerogel and 5-10 parts of a film-forming assistant. According to the invention, the hollow glass beads and aerogel are used as the heat insulation basic raw materials, the heat conductivity coefficient of the paint is greatly reduced and is as low as 0.031-0.035W/m.K, and the paint can reach a remarkable heatinsulation effect under the condition of a very small construction thickness. Meanwhile, the hollow glass beads and the aerogel are conducive to improving the chemical stability of the paint itself,thus improving the covering power, lightening power, corrosion resistance, light resistance and weather resistance, and enhancing the mechanical strength of the paint; cellulose, a wetting dispersant,a defoaming agent and a preservative are mixed; by virtue of ethylene glycol, the acrylic emulsion and a pH regulator, the paint has excellent cohesiveness, weather resistance, film-forming properties, gloss and color retention and mechanical properties; and the use of a vinyl chloride-vinylidene chloride copolymer emulsion also can reach a grade A1 flame retardant effect.

The invention discloses a formula for an acid and alkali-resistant and anti-pollution ultrafiltration membrane and a preparation method thereof. The ultrafiltration membrane is formed by coating a membrane casting liquid consisting of polyvinylidene fluoride, a nano-cellulose crystal and a pore forming agent in a certain mass ratio on a high-strength non-woven fabric substrate and adopting a non-solvent induced phase separation (NIPS) method in a phase conversion method. Due to the presence of a high-strength non-woven fabric support layer, the mechanical strength of the membrane is enhanced. The nano-cellulose crystal contains a hydrophilic group, and an ultrafiltration membrane formed by coblending the nano-cellulose crystal with the polyvinylidene fluoride can be used for overcoming the defects of poor anti-pollution capability and poor hydrophilicity of a pure polyvinylidene fluoride ultrafiltration membrane. The ultrafiltration membrane is resistant to corrosion of acids and alkalis, has high chemical stability, high water flux, high trapping characteristic, high mechanical strength and anti-pollution performance. According to the formula, the acid and alkali corrosion resistance of the membrane is enhanced, and the service life of the ultrafiltration membrane is prolonged.

The invention belongs to the field of current collector preparation, and discloses a preparation method for a flexible current collector. The method comprises the following steps: expanded graphite is prepared; graphene solution is prepared by utilizing the expanded graphite; and the current collector is prepared by utilizing the graphene solution. According to the preparation method for the flexible current collector, graphene is stripped by intercalation via ionic liquid so that the graphene is stripped and an objective of dispersion is achieved, graphene conductivity is relatively high, and preparation of a graphene thin film via a spraying mode is relatively simple; the prepared current collector is formed by the graphene and a supporting body, wherein density of the graphene and the supporting body is relatively low and mass of the current collector is relatively low so that energy density of a super capacitor can be greatly enhanced; besides, the graphene is high in chemical stability and is not liable to be corroded so that the service life of the super capacitor can be enhanced.

The invention provides a perfluorinated ion exchange resin and a preparation method and application thereof. The molecular formula of the perfluorinated ion exchange resin is shown as the formula M. The invention also provides a preparation method of the perfluorinated ion exchange resin; the method comprises: under the action of initiator, tetrafluoroethylene monomer and two sulfuryl fluoride vinyl ether monomers generate ternary copolymerization reaction. The perfluorinated ion exchange resin provided by the invention can simultaneously satisfy the requirements of mechanical strength and ion exchange volume and has favourable thermostability.

The invention provides a docetaxel lipid compound and a micellar compound used in the injection of the docetaxel lipid compound, belonging to a pharmaceutical preparation. The docetaxel lipid compound is composed of docetaxel with a therapeutic dose, phospholipid, cholesterol sulfate or/and similar cholesterol derivative, additive and injection water. By means of the lipidization of the docetaxel, the problem about organic menstruum of an injection and the problem of hypersusceptibility of a surface active agent are solved. A docetaxel lipid compound injection provided by the invention has the advantages of small side effect, low blood vessel simulation, high drug-loading rate, narrow particle size distribution, capability of filtering and degerming, good pharmaceutical stability, etc.

Provided is a polar compound having high chemical stability, high capability of aligning liquid crystal molecules, high solubility in a liquid crystal composition, and a large voltage holding ratio when used in a liquid crystal display device. The compound is represented by formula (1):

in which, for example, R¹ is alkyl having 1 to 15 carbons; MES is a mesogen group having at least one ring; Sp¹ is a single bond or alkylene having 1 to 10 carbons; M¹ and M² are hydrogen; and R² is a group represented by formulas (1a) to (1c):

in which, Sp² and Sp^a are a single bond or alkylene having 1 to 10 carbons; S¹ is >CH—; S² is >C<; and X¹ is —OH.

The invention discloses a lithium manganese nickel oxide cathode material having nickel manganese concentration gradient and a preparation method thereof. The average chemical composition of the lithium manganese nickel oxide cathode material can be shown as a molecular formula of LiNi<0.5-x>Mn<1.5+x>O<4>, wherein x is more than or equal to 0.1 and less than or equal to 0.35, the concentration of Ni is gradually reduced in a gradient distribution manner from the particle center to the particle surface of the lithium manganese nickel oxide cathode material, and the concentration of Mn is gradually reduced in a gradient distribution manner from the particle center to the particle surface of the lithium manganese nickel oxide cathode material. The preparation method comprises the following steps of firstly, synthesizing a spherical-like particle having a core-shell structure by a co-precipitation process; and finally, preparing the lithium manganese nickel oxide cathode material with change on the nickel and manganese concentration by element diffusion during the high-temperature roasting process. The cathode material disclosed by the invention has excellent high-temperature cycle stability and rate performance, high reversible capacity, high chemical stability, long cycle life, and excellent comprehensive electrochemical performance.

The invention discloses a preparation method of a filled-type thermally conductive silicone rubber composite material. The processing steps of the method are as follows: 1) using alcohol solution to mix carbon-encapsulated copper nanoparticles evenly, and then drying the nanoparticles to prepare dry powder; 2) adding the raw silicone rubber onto a roller, after the raw rubber covers the roller, adding carbon-encapsulated copper nanoparticles dry powder and hydroxy silicone oil in sequence in accordance with the formulation design amounts; mixing the dry powder and the hydroxy silicone oil on the roller repeatedly until being uniform, then adding a vulcanizing agent, and then mixing the mixture uniformly, thin-passing a lower sheet to obtain the silicon rubber compound; 3) putting mixed silicone rubber into a mold, carrying out first vulcanization after cold pressing and mold filling; 4) putting a vulcanization-molded sample on a glass cloth and carrying out post vulcanization on the sample in an air dry oven to obtain finished products. The invention mixes the carbon-encapsulated copper nanoparticles and high-temperature silicone rubber to ensure that the carbon-encapsulated copper nanoparticles are evenly scattered in the silicone rubber substrate to form an integral thermally conductive network chain, thereby improving the thermal conductivity of the silicone rubber.

The invention relates to a preparation method of sound-absorbing rubber, wherein the preparation method comprises the steps: according to the formula comprising 100-150 parts by weight of butadiene-acrylonitrile rubber, 5-15 parts by weight of hollow glass micro-beads, 3-8 parts by weight of nano molybdenum disulfide, 1-6 parts by weight of lanthanum oxide, 3-15 parts by weight of azodicarbonamide, 1-5 parts by weight of urea, 2-8 parts by weight of carbon nanotubes and 5-15 parts by weight of ethylene propylene diene monomer, adding the raw materials of the sound-absorbing rubber into an open mill, mixing, placing the product obtained from the mixing for 12-48 h, re-mixing, sending the product obtained from the re-mixing into a plate vulcanizing machine, and successively carrying out press vulcanization and press shaping. The sound-absorbing rubber has the advantages of good sound-absorbing performance, and large tensile strength.

The invention provides a gas wettability reverse processing agent composition and a rock surface wettability reversal method. The gas wettability reverse processing agent composition comprises a water solution of alkylphenol polyoxyethylene ether as a pretreating agent, and an ethanol-water solution of perfluoro ethyl acrylate as a reverse processing agent. By adopting the gas wettability reverse processing agent composition, the gas wettability reversing of the rock surface can be achieved, and the sandstone surface can be effectively converted into gas wettability from liquid wettability.

A fluoropolymer (A) having units derived from monomer units formed by cyclopolymerization of at least one fluorinated diene selected from a fluorinated diene represented by the formula (1) and a fluorinated diene represented by the formula (2), and units derived from monomer units formed by cyclopolymerization of a fluorinated diene represented by the formula (3):

CF₂═CFCF₂—C(CF₃)(OR¹)—CH₂CH═CH₂  (1)

CF₂═CFCH₂—CH((CH₂)_nC(CF₃)₂(OR¹))—CH₂CH═CH₂  (2)

CF₂═CFCH₂—CH(COOR²)—CH₂CH═CH₂  (3)

wherein R¹ represents a hydrogen atom, a blocked group of a hydroxyl group capable of being converted into a hydrogen atom by an acid, or a blocked carboxyl group-containing organic group capable of being converted into a carboxyl group-containing organic group by an acid, R² represents a hydrocarbon group having at most 20 carbon atoms, and n represents 0 or 1.

The invention discloses a fluorescent compound and a fluorescent probe based on the fluorescent compound as well as a preparation method and an application of visible test paper, and belongs to the technical field of the preparation of the fluorescent compound. Cholesterol (cholic acid) and 8-hydroxyquinoline are respectively used as a side-chain structure and an end-capping structure to be simultaneously introduced into para-position di-benzyne substituted benzene so that a novel fluorescent compound is synthesized and has all supermolecule characteristics. The fluorescent probe prepared by utilizing the fluorescent compound is good in photochemical stability in a water phase and capable of high sensitively and selectively identifying sarin nerve gas and simulants thereof. The preparation method of the fluorescent compound is simple to operate and moderate in reaction condition; the prepared fluorescent probe is good in photochemical stability, high in sensitivity and good in selectivity; when the fluorescent molecular probe is combined with a commodity fluorescent instrument, the environmental sarin poison gas and simulants thereof can be sensitively detected.

The invention relates to a sulfonated polyarylether polymer ion exchange membrane containing crosslinking groups and application thereof to a liquid flow energy storage battery of acidic electrolyte. The ion exchange membrane provided by the invention is mild in preparation conditions and easy for batch production. The prepared ion exchange membrane has favorable mechanical performance and simultaneously has favorable proton conductivity and excellent performance of blocking vanadium ions from infiltrating in a full-vanadium liquid flow energy storage battery. In addition, the chemical stability and the vanadium blocking performance of the ion exchange membrane can be further improved through a crosslinking reaction.

The invention discloses a visible light responsive photocatalyst, which belongs to the field of photocatalysis. The prepared photocatalyst has a good photocatalytic effect, and has low cost and mild synthesis conditions. The photocatalyst of the invention is composed of a vanadium pentoxide nanosheet and a two-dimensional carbon nitride compound with a mass ratio of 1:100-40:100. A preparation method comprises the following steps: placing the vanadium pentoxide nanosheet in isopropanol, and performing ultrasonic stirring to uniform dispersing; dropping an obtained suspension into melamine, andperforming stirring and uniform mixing; and finally, performing secondary calcination on an uniformly stirred mixture to obtain a light yellow solid which is the vanadium pentoxide/carbon nitride composite photocatalytic material. The photocatalyst prepared by the method of the invention has good photocatalytic performance and photocurrent response, and has a wide visible light response range.

The invention belongs to the technical field of the biochemical industry, discloses a method for preparing a multielement chelate fertilizer by use of a threonine mother liquor and aims at solving the problems of low utilization rate of the threonine mother liquor, environmental pollution and high preparation cost of the chelate fertilizer in the prior art. The method for preparing the multielement chelate fertilizer by use of the threonine mother liquor comprises the steps of adding water-soluble inorganic salts containing elements needed by crops to the threonine mother liquor and adding water for dissolving, keeping the pH value of the solution in the range of 6-8, carrying out a stirring reaction for 1-5 hours at 70-85 DEG C, and then cooling and crystalizing the reaction mixture, and then drying, grinding, weighing and packaging the crystals. The chelate fertilizer obtained by the method is characterized in that the antagonistic action between various elements such as zinc, magnesium, iron, calcium and boron disappears and the synergistic effect between the elements is improved after the threonine is chelated with all the elements, and therefore, the chemical stability of each element is enhanced so that fertilizer loss or invalidation is reduced, and furthermore, the utilization rate of the fertilizer is increased. The method is simple and low in investment.

The invention is an antistatic ceramic, which is made of the following raw materials in parts by weight: silicon nitride 60-75, kaolin 10-16, aluminum oxide 2-8, silicon dioxide 2-5, tin oxide 3‑9, zirconia 1‑5, molybdenum disilicide 1‑3, antimony powder 10‑15, titanium dioxide 1‑3, conductive graphite 5‑6, silicon carbide 1‑5, boron carbide 1‑2, aluminum nitride 1 ‑2, thorium oxide 2‑4, appropriate amount of deionized water. The ceramic prepared by the present invention has certain electrical and thermal conductivity, prevents the generation of static electricity, prevents frictional overheating, prolongs the service time of pipelines and channels, and the ceramic of the present invention also has certain corrosion resistance and oxidation resistance, and has Good toughness.

The invention relates to a preparation method of a SiC nanowire toughened chemical gas codeposited HfC-SiC compound phase coating. The preparation method comprises the following steps: first, preparing a SiC nanowire on the surface of a C/C composite material by means of a chemical vapor deposition technique; and then depositing an HfC-SiC compound phase coating by means of the chemical vapor deposition technique to further obtain the SiC nanowire toughened chemical gas codeposited HfC-SiC compound phase coating on the surface of the C/C composite material. By controlling the tissue componentsand the uniform degree of the SiC nanowire toughened chemical gas codeposited HfC-SiC compound phase coating, mismatching of coefficients of thermal expansion between the coating and the C/C composite material is alleviated. Crack generation and expansion are inhibited by means of a nanowire bridging and pulling out mechanism, so that the cracking condition of an HfC-based ceramic coating in an ablating process is inhibited effectively. The prepared coating is uniform in thickness, controllable in tissue, short in process preparation period, simple in process course and low in cost.

The invention provides a nitride near infrared fluorescent material. The chemical formula of the material is AxMyBzSi5N8: (aEr, bEr, cR), wherein A is selected from one or two of La, Lu and Y; M is selected from at least one of Ca, Sr and Ba; B is selected from one of Li, Na and K; and T is selected from one of Yb and Pr; in the AxMyBzSi5N8: (aEr, bEr, cR), the value ranges of x, y and z meet thefollowing conditions: x is greater than or equal to 0.1 but less than or equal to 0.2, y is greater than or equal to 1.6 but less than or equal to 1.915, and z is greater than or equal to 0.1 but lessthan or equal to 0.2; and the value ranges of a, b and c meet the following conditions: a is greater than or equal to 0.1 but less than or equal to 0.1, b is greater than or equal to 0.05 but less than or equal to 0.1 and c is greater than or equal to 0.005 but less than or equal to 0.03.

The invention relates to co-activated magnesium alumosilicate based phosphors, to a process of its preparation, the use of these phosphors in electronic and electro optical devices, such as light emitting diodes (LEDs) and solar cells and especially to illumination units comprising said magnesium alumosilicate-based phosphors.

The invention discloses a wafer-level chip packaging structure. The wafer-level chip packaging structure comprises an image sensing chip and a transparent cover plate, wherein metal conductive pattern layers electrically connected with pin bonding pads are arranged on the surface, with the back towards the image sensing chip, of a passivation layer and blind holes respectively. Each supporting cofferdam is composed of a first supporting cofferdam layer and a second supporting cofferdam layer which are placed in a vertically stacked mode, a plurality of continuously arranged V-shaped notched are formed in the inner side face of each second supporting cofferdam layer, arc-shaped notches are formed in the four corners of each second supporting cofferdam layer respectively, a plurality of holes are evenly formed in the surface, in contact with the image sensing chip, of each supporting cofferdam, each metal conductive pattern layer is formed by placing a titanium layer, a copper layer, a nickel layer and a palladium layer in a stacked mode in sequence, and the titanium layers are in contact with the passivation layer. According to the wafer-level chip packaging structure, stress is relieved, the structure is not prone to oxidation corrosion, the response time of a device is shortened, the reliability of a product is improved, and the requirement for continuously covering the inner wall of a deep hole with a high aspect ration with a metal layer can be met.

The invention discloses a preparation method of an intelligent glass cathode electrochromic layer coating material. In a process of preparing the intelligent glass cathode electrochromic layer tungsten oxide coating material, various oxides are fully and uniformly mixed by using slip casting, so that the density and uniformity of a target material are improved, and then the service life of the target material is prolonged. The chemical stability of the tungsten oxide material is improved by adding a second oxide into the tungsten oxide. Oxygen vacancies are formed by the vacuum treatment in asintering process, so that the material has conductivity, and stable sputtering is facilitated. In addition, a process of staged heating sintering is adopted, and other gases are added in argon gas, so that the film-forming rate can be improved, the surface roughness can be reduced, the sputtering rate can be improved, the film roughness can be reduced, the activation of equipment can be improved,the production cost can be reduced, the application of the tungsten oxide film in electrochromic devices is greatly improved, the production requirements are met, and the market promotion and productpopularization are facilitated.